高强度低压紫外线灯钨电极质量改进研究

Quality Improvement for the Tungsten Electrode in High Intensity Low Pressure Ultraviolet Lamp

高强度低压紫外线杀菌灯钨电极(灯丝)主要为热电子发射提供能量,是紫外线杀菌灯的"心脏",会影响灯的质量和使用寿命。虽然目前国内高强度低压紫外线杀菌灯产量大,但是品质难以达到欧美发达国家的水平。而高强度低压紫外线杀菌灯电极的结构设计、生产工艺是保证产品最终质量的关键。因此,从高强度低压紫外线杀菌灯电极的结构设计、生产工艺全过程进行探讨分析,寻求最佳的设计与生产工艺,是提高灯质量的有效方法。研究结果表明:(1)改变结构设计有效解决了高强度低压紫外线杀菌灯电极并圈、变形等缺陷;(2)改变退火工艺有效改善了灯丝的断丝现象。

Tungsten Electrode(filament)in high intensity low pressure UV disinfection lamp is mainly in function of providing energy to activate radiation.It is the“heart”of lamp which impacts the quality and age of lamp.The quality of high intensity low pressure UV disinfection lamp is difficult to achieve the world class level though the domestic demand is quite high.The quality of high intensity low pressure UV disinfection lamp is guaranteed by manufacture process and design of electrode(filament).The best design and process by analyzing the manufacture process and design of the lamp was figured out.It is the most efficient method to promote quality of lamp.The result indicated that①the defect of electrode(filament)of high intensity low pressure UV disinfection lamp(connected wind,deformed coil)was solved by changing the structure design,②the phenomenon of broken coil was improved by changing annealing process.